ReactOS is a free and open-source operating system based on the best design principles found in the Windows NT architecture. Written completely from scratch, ReactOS is not a Linux-based system and it shares none of the UNIX architecture. The main goal of the ReactOS project is to provide an operating system which is binary compatible with Windows. This will allow Windows applications and drivers to run as they would on a Windows system. Additionally, the look and feel of the Windows operating system is used, such that people accustomed to the familiar user interface of Windows would find using ReactOS straightforward. The ultimate goal of ReactOS is to allow people to use it as an alternative to Windows without the need to change software they are used to.

Changelog: https://reactos.org/wiki/Community_Changelog-0.4.13
Homepage: http://www.reactos.org/

ReactOS-0.4.13-src.zip
SHA1:6ac88f6e0a550413fbc323778eb10214db4b6574
MD5:ad0828272296e39cb00cc1ae7037e25f

ReactOS-0.4.13-live.zip
SHA1:d5d11fbeef0eb59b9de1d278e512c9a379f77268
MD5:40c4e0dc014cec62233a56b2d104c8a9

ReactOS-0.4.13-iso.zip
SHA1:249b68e19a461dd59d95f3518637b724b940f4a4
MD5:343f713809fa9570e8842c4c97bfc876